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describe and explain the possible effect on your results of the following experimental errors or variations. in each case, specify the component(s) whose percentage(s) would be too high or too low. a) after adding dichloromethane to panacetin, you didn't stir or shake the mixture long enough. b) during the NaHCO3 extraction, you failed to mix the aqueous and organic layers throughly. c) you mistakenly extracted the dichloromethane solution with 5% HCl rather than 5% NaHCO3. d) instead of using pH paper, you neutralized the NaHCO3 solution to pH 7 using litmus paper.
Show how to prepare 3-pentanol from ethyne. Show how to prepare 2-cholro-2-methylpentane from 1-propene
Write as a superposition of 3 eigenstates, indicating the numerical value of each coefficient. Using the coefficients, demonstrate that is normalized.
The specific rotation of a compound is defined as the observed rotation of the compound when its concentration is 1 g/mL in a sample tube which is 10 cm long. If a certain compound is observed to have a specific rotation of +8.0°
Based on a Kc value of 0.170 and the given data table, what are the equilibrium concentrations of XY, X, and Y, respectively
What is the value of the rate constant. What is the reaction rate when the concentration of NO2(g) is 0.842 M and that of O3(g) is 1.82 M if the temperature is the same as that used to obtain the data shown above
Explain how you might do this same titration if you did not have a pH meter. Why do you think that the sample titration curve of acetic acid titrated with NaOH would look different than a titration curve for the tirtration of phosphoric acid with ..
Using the calibration data provided below, calculate the concentration of cocaine (mg/mL) in the original urine sample.
mass m in a one dimensional box of length L? If the answer is yes, then express the energy of this trial wavefunction in terms of h, m, and L?
when 31 g of phosphorus reacts with oxygen gas 71 g of an oxide of phosphorus is the product. what mass of oxygen gas
What is the total pressure (in atm) in a 15.0 L flask 20.0 degrees celcius, which contains 0.127 moles of H2 and 0.288 moles of N2?
in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction
The printed label on a bottle of commercial vinegar states that the acetic acid concentration is 5%. (a) If the manufacturer had reported two significant figures int he concentration, what would the percentage range be so that all values would rou..
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